Question 21 correct 2 2 pts the fourth step in

Question 21
Correct!
2 / 2 pts
The fourth step in calculating a confidence interval for an
independent-samples t test is to:<br>
The fourth step in calculating a confidence interval for an independent-samples t
test is to:
Question 22
Correct!
2 / 2 pts
________ is a weighted average of the two estimates of
________.<br>
________ is a weighted average of the two estimates of ________.

Question 23
Correct!
2 / 2 pts
Skip to question text.
Researchers were interested in whether relaxation training decreases the number of
headaches a person experiences. They randomly assigned 20 participants to a
control group or a relaxation training group and noted the change in number of
headaches each group reported from the week before training to the week after
training. The dependent variable in this study is:
Question 24
Correct!
2 / 2 pts
Skip to question text.
The owners of the SciFi channel are interested in whether watching the SciFi
channel causes people to become “geeky,” and if so, whether any such effects
depend on a person's gender. They hire you to design and carry out the appropriate
study. You design a study in which you randomly assign an equal number of men
and women to watch 0, 3, 5, or 9 hours of the SciFi channel each week for 6
weeks. How would you label the ANOVA used to analyze your data?
Question 25
2 / 2 pts
A one-way within-groups ANOVA is also known as a ________
A one-way within-groups ANOVA is also known as a ________ ANOVA.
Question 26
Correct!
2 / 2 pts
Checking an independent-samples t test for the assumption of
normality is part of step ________ of the six steps.<br>

Checking an independent-samples t test for the assumption of normality is part of
step ________ of the six steps.
Question 27
2 / 2 pts
The comparison distribution for an independent-samples t test
is a distribution of:<br>
The comparison distribution for an independent-samples t test is a distribution of:
Question 28
Correct!
2 / 2 pts
To evaluate Tukey's HSD, we must consult the ________
table.<br>
To evaluate Tukey's HSD, we must consult the ________ table.
Question 29
Correct!
2 / 2 pts
A study found statistically significant results for a hypothesis
tested with an independent-samples t test. The author of the
study reported her effect size for the test as 0.28. According to
Cohen's convention, this effect size is considered:<br>